Does using time-varying target leverage ratios in structural credit risk models improve their accuracy?

Empirical findings and theoretical studies suggest that firms adjust toward time-varying target leverage ratios. This paper studies the performances of the default probabilities generated from two structural credit risk models (one with time-dependent leverage ratios and one with constant target lev...

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Published in:Journal of risk model validation 2012-10, Vol.6 (3), p.27
Main Authors: Hui, Cho-Hoi, Wong, Tak-Chuen, Lo, Chi-Fai, Huang, Ming-Xi
Format: Article
Language:English
Subjects:
Capital structure
Credit ratings
Credit risk
Default
Financial leverage
International
Liability
Ratios
Studies
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creator Hui, Cho-Hoi
Wong, Tak-Chuen
Lo, Chi-Fai
Huang, Ming-Xi
description Empirical findings and theoretical studies suggest that firms adjust toward time-varying target leverage ratios. This paper studies the performances of the default probabilities generated from two structural credit risk models (one with time-dependent leverage ratios and one with constant target leverage ratios) and credit ratings. The time-dependent model consistently performs better than the other model and credit ratings in terms of having the discriminatory power to differentiate firms' default risk and the capability to predict default rates over the period from 1996 to 2006. The material differences between the predictive capability of the two models show that the time dependency of the target leverage ratio is a critic al factor in modeling credit risk. The study also provides evidence to support the existence of a time-varying target leverage ratio. [PUBLICATION ABSTRACT]
doi_str_mv 10.21314/JRMV.2012.090
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subjects Capital structure
Credit ratings
Credit risk
Default
Financial leverage
International
Liability
Ratios
Studies
title Does using time-varying target leverage ratios in structural credit risk models improve their accuracy?
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